[TIMOB-23825] Facebook logout is not working for iOS

var fb = require('facebook');
var win = Ti.UI.createWindow({
	title : 'Login/Logout',
	backgroundColor : '#fff',
 
});
var label = Ti.UI.createLabel({
	text : 'Logged In = ' + fb.loggedIn,
	color : '#000',
	font : {
		fontSize : 20
	},
	top : 10,
	textAlign : 'center'
});
win.add(label);
fb.addEventListener('login', function(e) {
	if (e.success) {
		alert('login from uid: ' + e.uid + ', name: ' + JSON.parse(e.data).name);
		label.text = 'Logged In = ' + fb.loggedIn;
	} else if (e.cancelled) {
		// user cancelled
		alert('cancelled');
	} else {
		alert(e.error);
	}
});
fb.initialize();
fb.addEventListener('logout', function(e) {
	alert('logged out');
	label.text = 'Logged In = ' + fb.loggedIn;
});
var loginButton = fb.createLoginButton({
	readPermissions : ['email'],
	top : 100,
	width : 150,
	height : 100
});
win.add(loginButton);

win.open();